Safilo Group houses the best sunglasses brands in the world including Gucci, Dior, YSL, Marc Jacobs, Marc by Marc Jacobs, Armani, and Carrera, to name a few. We sat down with Eden Wexler, director of PR for Safilo to talk sunglasses and photographed some of summer's most-wanted frames on some hot models.

Cannon: What are the different types of face shapes?

Eden Wexler: Round, oval, square, heart, long.

C: Which frames look best with each face shape?

EW: Oval faces are perfectly balanced so there isn’t a single frame style with which they’re not compatible. The other face shapes work best with frames that balance out their strongest features. People with square-shaped faces tend to have a broad forehead, wide cheekbones and a prominent jawline. Wearing frames with some curve appeal, such as round or oval lenses, help balance these strong angles. Round faces have the opposite scenario—they have little to no sharp edges and are full all the way around. Angular frames, such as square lenses, flatter and balance a round face. Long faces are more narrow than wide. Sporting oversized round frames help to create the illusion of a wider, shorter face. Heart faces are wide at the forehead and cheekbones and become narrow at the chin. Frames that broaden a narrow jaw without playing up the width of the forehead, such as aviators, are good options.

C: What are three basic techniques or steps whenit comes to choosing sunglasses?

EW: Knowing your face shape, doing the "smile test" to make sure they are sitting properly on your face and don't move up off your nose bridge when you smile, and making sure they aren't too loose and will slide down or fall off.

C: What should you look for in sunglasses thatmake them a quality piece?

EW: As a fail-safe measure, I highly recommend that you always purchase your sunglasses from a reputable department store or sunglass specialty retailer (like Solstice Sunglass Boutique) to ensure that you are not buying an inferior or faux product. Never trust your most important asset — your eyes — to a street vendor!

C: What is the difference between polarized andnon-polarized?

EW: Polarized lenses are designed to eliminate glare from surfaces such as water, sand, snow, and pavement. If outdoor glare isn't a concern, you can stick with a traditional lens that will still provide 100% UVA/UVB protection.

C: Is buying polarized lenses important whenchoosing sunglasses?

EW: Depends on what they are being used for, but in general, a polarized lens will provide additional benefits.

C: What is the best way to clean your lenses; does your t-shirt cut it?

EW: Particles in a t-shirt or paper towel can scratch your lenses. It's best to use a lens cleaner and/or lens cleaning cloth.

C: Do any, if not all, brands that you manufacture have anoption to get prescription lenses for yoursunglasses?

EW: Most brands offer what we, in the industry, call "Rx-able" options. But ultimately, the strength of your prescription and the amount of lens curvature in your sunglass of choice will ultimately determine whether it can accomodate a prescription lens.

C: Is there a difference between men’s and women’slenses/ frames?

EW: There is no difference in the lenses, and the frames can vary greatly by style and color depending on if they are a men's or women's style

C: Can women wear men’s frames or vise versa?

EW: Yes, as long as the frame looks good and fits their face properly.

C: What are the hottest styles for the up comingseason?

EW: Anything retro looking.

C: What is your top seller?

EW: Cat eye shapes and aviators (in many different shapes and materials) are quite popular right now.

Jennifer Davidson joined theFashionSpot team as Managing Editor in November 2010. In addition to overseeing the editorial content of the site, she shares her fashion, beauty, and pop culture obsessions in her weekly column The Love List. Prior to joining the tFS team, Jennifer produced fashion segments for television, and is also the co-founder of StyleBakery.com.